This Philips PAR38 pulse start ceramic metal halide bulb uses 100W and produces 6,400 lumens. It has an average life of 16,000 hours. This bulb has a color temperature of 4200K, or cool white, and is not dimmable. This bulb has a universal burn position and is great for outdoor security and landscape lighting. You can buy this, and hundreds of thousands of other products, at http://www.LightingSupply.com/.